This is a great article posted over at MMQB about Stevie Brown's surgery.
A notable quote - It sounds like some good news for Stevie and hopefully he will be back full speed next year.
Inside the knee joint, there is no margin for a navigation error. But Andrews discovers good news about Brown’s injury: It is an isolated ACL tear. None of the other ligaments are damaged, and Andrews finds an intact meniscus while probing with a spinal needle. There are also no wear patterns on the bone surfaces.